#include <REGX52.H>
#include <intrins.h>

void Delay1ms(unsigned int time)		//@11.0592MHz
{
	unsigned char i, j;
	while(time--)
	{
		_nop_();
		i = 2;
		j = 199;
		do
		{
			while (--j);
		} while (--i);
	}
}
int main()
{
	while(1)
	{
		if(P3_3==0)
		{
			Delay1ms(20);
			while(P3_3==0);
			Delay1ms(20);
			P2--;
		}
	}
}
